Senior Backend Engineer - System Integration

Job description

### **Our Journey** The ShopBack Group is Asia-Pacific’s leading shopping, rewards, and payments platform, serving over 20 million active members across 13 markets. In 2025, the Group continued its global growth with its expansion into North America. Driven by the vision to make every day more rewarding, ShopBack is dedicated to saving members money and time, and delivering delight every day. The platform also enables merchants and brands to engage with their members in a cost-effective manner. Founded in 2014, ShopBack now powers over US$5.5 billion in annual sales for over 20,000 online and in-store partners, and has rewarded shoppers with more than US$900 million (over S$1 billion) in Cashback to date. Through its innovative offerings, ShopBack continues to create value for both members and merchants. Notably, its payment solution, ShopBack Pay, offers members a convenient and rewarding payment option at checkout. ### Your Adventure Ahead - Lead and deliver large‑scale travel platform components such as flight/hotel search, pricing/availability aggregation, booking flows, or content systems. - Contribute to ideation, technical design, implementation, and testing of high‑impact travel product features. - Design and build robust, scalable distributed systems capable of handling real‑time travel inventory and pricing. - Architect clean, well‑structured APIs used by client applications for search, booking, and trip management. - Collaborate closely with Product, Data, and UX teams to shape the future of the ShopBack Travel experience. - Work with external partners (OTAs, GDS, suppliers) to integrate APIs, understand domain constraints, and improve reliability. - Drive engineering best practices, mentor other engineers, and elevate technical standards within the team. - Analyze complex requirements, propose pragmatic solutions, and articulate trade-offs clearly. ### Essentials to Succeed - 7+ years of experience building consumer‑facing platforms or distributed backend systems. - **Travel / OTA experience strongly preferred.** Ideal candidates have prior experience working within the travel or OTA ecosystem — such as flight metasearch, hotel aggregation, activity marketplaces, travel content platforms, or GDS/LCC/API integrations — and understand the complexities of pricing, availability, and supplier systems. - Experience with flight or hotel domains is a strong advantage: availability, fare rules, rates & inventory, ranking/relevance, caching strategy, or booking orchestration. - Hands-on experience working with Node.js (preferred) or other backend technologies. - Experience deploying applications into cloud environments (AWS highly desirable). - Strong understanding of API design, microservices, and event-driven architecture. - Ability to thrive in a fast-paced, complex technical environment with high ambiguity. - Strong communication skills and ability to collaborate across engineering, product, and third-party partners. - Demonstrated use of Generative AI tools (e.g. ChatGPT, Cursor, Claude) to develop new or improve workflows, enhance productivity, and drive efficiency at scale - Bachelor's degree in Computer Science, Software Engineering, Information Systems, or a related technical field ### Technologies We Use & Love - Cloud: AWS - Infra: Kubernetes - Programming languages: NodeJS / Typescript - Relational database: Postgres - Message queue: Kafka, SQS - Continuous Integration: Gitlab - Monitoring: DataDog - Big Data: Redshift, Spark, S3, etc. - Communication: Slack - Project Management: JIRA / Confluence - Other technologies: - Knative Eventing / Serving - Debezium + Kafka Connec